Carbon steel rebar is the traditional default for concrete reinforcement, but it corrodes when exposed to moisture, chlorides, or aggressive chemicals. GFRP rebar was developed specifically to remove that failure mode.
Feature Comparison
| Feature | GFRP Rebar | Steel Rebar |
|---|---|---|
| Corrosion Resistance | 100% corrosion-resistant (non-metallic) | Corrodes over time, especially with moisture or chloride exposure |
| Weight | Up to ~75% lighter than steel | Heavy; increases transport and handling cost |
| Tensile Strength | Typically 1000+ MPa | Typically 450-550 MPa (Fe500 grade) |
| Elastic Modulus (Stiffness) | Lower (~45-60 GPa) - more flexible | Higher (~200 GPa) - stiffer |
| Magnetic / Conductive | Non-magnetic, non-conductive | Magnetic and electrically conductive |
| Lifecycle Maintenance | Low - no rust-driven repair cycles | Higher - rust can require repair/replacement over time |
| Initial Material Cost | Higher upfront cost | Lower upfront cost |
| Site Handling | Easy to cut with standard tools, no sparks | Requires heavy-duty cutting/bending tools |
Figures reflect typical published ranges for these material classes and can vary by manufacturer, grade, and diameter. Confirm exact specifications for your project with our team.
Which Should You Choose?
Choose GFRP rebar for corrosion-prone environments (marine, coastal, chemical, water treatment) where long-term durability and low maintenance outweigh higher upfront material cost. Choose steel rebar for standard, dry, low-exposure applications where initial cost is the primary driver.
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